prewood丨日本东京丨VUILD Inc.

由 VUILD Inc.（总部：神奈川县厚木市；CEO：秋吉浩气）负责设计与监督的建筑事务所宣布，“prewood”已建成完成。该创新木结构建筑采用模块化建造系统，旨在实现未来的可拆卸、迁移与再利用。该项目作为“可拆卸城市木构”在超小型城市用地上的概念验证，这类地块空间极为受限，甚至难以作为停车场使用。项目通过结构模块化，应对用地受限与成本控制的挑战，在简化建造流程的同时，最大化可租赁面积。©VUILD

VUILD Inc. (Headquarters: Atsugi, Kanagawa; CEO: Koki Akiyoshi), the architectural firm leading the project’s design and supervision,announces the completion of “prewood.” This innovative wooden building utilizes a modular construction system designed for future disassembly, relocation, and reuse. The project serves as a proof-of-concept for “dismantlable urban timber” on ultra-small urban sites so constrained they are often difficult to use even as parking lots. The project addresses the challenges of restricted site conditions and cost through structural modularization, maximizing leasable floor area while streamlining construction.

▼项目概览，overview of the project © Hayato Kurob

▼建筑街景，Street view of the building © Hayato Kurob

面向拆解与再利用的模块化建造

Modular Construction for Disassembly and Reuse

“prewood”从建筑全生命周期出发进行设计：拆解、回收、迁移与再利用。

结构：通过堆叠盒状木质模块，使建筑可以按单元拆解并再利用。

环境影响：该方式不仅降低“前期碳排放”（制造/运输/施工），同时通过将拆除阶段纳入设计，减少“隐含碳”，为建筑提供一种新的可持续方法论。

▼结构模型，structure model©VUILD

“prewood” is designed with the entire architectural lifecycle in mind: disassembly, recovery, relocation, and reuse.

Structure: By stacking box-shaped wooden modules, the building can be disassembled and reused unit-by-unit.

Environmental Impact: This approach reduces both “upfront carbon” (manufacturing/transport/construction) and “embodied carbon” by incorporating the demolition phase into the design, offering a new sustainable methodology for architecture.

▼盒状木质模块，box-shaped wooden modules © Hayato Kurob

▼木质结构，wooden structure©VUILD

面向狭小地块的高效建造流程

Efficient Construction Process for Narrow Sites

为克服城市中脚手架与作业空间受限的问题，该模块化系统实现了高效率的装配方式。

快速实施：主体结构工程仅用两天完成。

劳动力效率：由脚手架技术人员完成装配，而非传统木匠，从而降低对专业木作工艺的依赖。

数字化工程：约2,500个螺栓位置（共9种类型）在Rhino中完成设计，并整合进预切割数据。在装配过程中，使用3D打印的角度导向工具，以确保螺栓安装的高精度。

To overcome the tight limitations of scaffolding and workspace in urban areas, the modular system allows for highly efficient assembly.

Rapid Execution: The primary structural work was completed in just two days.

Labor Efficiency: Assembly was performed by scaffolding technicians rather than traditional carpenters, reducing dependency on specialized timber craftsmanship.

Digital Engineering: Approximately 2,500 screw positions across nine types were designed in Rhino and integrated into pre-cut data. During assembly, 3D-printed angle guides were used to ensure high-precision screw placemen.

▼装配施工过程，assembly construction process© VUILD

城市功能与空间规划

Urban Programming and Planning

平面布局：服务性功能（卫生间与楼梯）集中布置在前部。通过采用错层（跃层）设计，在有限占地面积内最大化座位空间。

2.5层半私密空间：面向日本桥/茅场町区域的办公人群，用于商务晚餐与小型活动。

屋顶：在邻近建筑之间形成一处安静的户外空间，为使用者提供远离城市喧嚣的休憩场所。

Floor Plan: Service functions (restrooms and stairs) are concentrated at the front. By utilizing split-levels (skip floors), the design maximizes seating area within a limited footprint.

2.5F Semi-Private Space: Designed for office workers in the Kabutocho/Kayabacho area, this space supports dinner meetings and small events.

Rooftop: A quiet outdoor space tucked between neighboring buildings, offering an escape from the city bustle.

▼2.5层半私密空间，2.5F Semi-Private Space © Tomoyuki Kusunose

▼楼梯，staircase © Tomoyuki Kusunose

材料选择与城市木构验证

Material Selection and Urban Timber Validation

项目位于严格的防火区域，在满足准耐火结构要求的同时，致力于降低隐含碳排放。

材料：外立面采用杉木（Sugi）板材，室内采用灰泥饰面，天花采用外露交叉层压木材（CLT），并通过“炭化效应”防火设计。

耐久性：为应对日本木质外立面耐久性的挑战，设计采用无节直纹（Masame）木材，不做涂装以实现自然风化，在板材之间设置通风缝隙，并通过金属板对木材端部进行保护。

▼轴测图，axonometric diagram©VUILD

Located in a strict Fire Prevention District, the project pursues the reduction of embodied carbon while meeting quasi-fireproof structural requirements.

Materials: Cedar (Sugi) panels for the exterior, plaster for the interior, and exposed Cross-Laminated Timber (CLT) for the ceiling (utilizing a “char-acting” fire resistance design).

Durability: To address the challenges of wood exterior longevity in Japan, the design uses knot-free vertical grain (Masame) timber, is unpainted to allow for natural weathering, includes ventilation gaps between boards, and protects wood end-grains with sheet metal.

▼杉木板材结构细部，Sugi panels structure details©VUILD

▼结构细部，structure details©VUILD

Location: Nihonbashi-Kayabacho, Chuo-ku, Tokyo

Usage: Restaurant

Client: Heiwa Real Estate

Architectural Design & Supervision: VUILD

Structural & Environmental Engineering: Arup

Construction: Atelier Umi

Lumber Processing: Yamadai, Shinohara Shoten

CLT Processing: VUILD

Scaffolding & Assembly: Tokyo BK Ashiba

Photo: Tomoyuki Kusunose, Hayato Kurobe